Recommended Gfcis (Ground Fault Circuit Interrupters); Ac Terminal Block Connections (Me2012, Me2512, And Me3112); Figure 2-8, Ac Terminal Block - Magnum Energy ME3112-U Owner's Manual

Installation
2.5.3

Recommended GFCIs (Ground Fault Circuit Interrupters)

Some electrical safety codes require the use of GFCI's. In compliance with UL standards, Sensata
has tested some GFCIs to ensure they function properly when connected to the inverter's AC
output: See the WARNING below.
CAUTION: Ground Fault Circuit Interrupters (GFCIs) shall be installed in the recreational
vehicle wiring system to protect all branch circuits.
WARNING: Risk of electrical shock. Use only the following ground-fault circuit
interrupters [receptacles or circuit breaker(s)]; others may fail to operate properly
when connected to the ME inverter: Leviton 8899-A, N7899, and the GFNT1 and GNNT2.
2.5.4

AC Terminal Block Connections (ME2012, ME2512, and ME3112)

The ME2012, ME2512, and ME3112 models have a six-pole AC terminal block and one AC ground
terminal to connect the inverter's AC input and output wiring. This terminal block (see Figure 2-8)
allows a service/distribution panel (main panel) to be wired to the inverter's input, and also allows
a dedicated panel (sub-panel) between the inverter's output wiring and the AC loads. To access
and view the AC terminal block and ground terminal, remove the two Phillips screws holding the
AC wiring access cover plate (see Figure 1-3, Item 15).
Each connection on the AC terminal block is rated to accept one #14 to #6 AWG (2.1 to 13.3
mm ) CU stranded wire, or two #12 AWG (3.3 mm
2
M3.5 slotted head screw, and the maximum tightening torque is 16 lbf-in (1.8 N-m).
Info: One of the AC wiring confi gurations [SI/SO (60A), Figure 2-10] uses a #6 AWG
(13.3 mm ) CU wire to carry 60 amps, and splits to two wires to allow 30 amps for
2
each leg (i.e., AC HOT1 and AC HOT2). IDEAL Industries Inc. (www.idealindustries.
com) manufactures a crimp connector (PN: 412) and a separate insulator (PN: 417)
that allow up to two #8 AWG (8.4 mm
connected together.
Info: To comply with ABYC requirements for marine installations, the AC terminal has
a stainless steel wire protector to prevent wire damage from the set-screw.
Info: The inverter's NEUT IN and NEUT OUT terminals are electrically isolated from
each other while inverting. This is related to the neutral-ground bonding requirement
and helps to prevent ground-loops (see Section 2.6.3 for more information).
The AC ground terminal can accept one #14 to #6 AWG (2.1 to 13 mm
uses a slotted head screw and has a recommended maximum tightening torque of 45 lbf-in (5.1
N-m). For multiple ground wires, use a pressure or mechanical connector to attach the single wire
from the AC ground terminal to the input and output ground connections.
HOT 1 OUT
HOT 2 OUT
NEUT OUT
Page 18
) wires, with one #6 AWG (13 mm
2

Figure 2-8, AC Terminal Block

) CU stranded wires. The connection uses a
2
© 2017 Sensata Technologies
) wire to be
2
) CU stranded wire. It
2
HOT 2 IN
HOT 1 IN
NEUT IN
AC GROUND
(In & Out)